Mine-car coupling



I. MARTIN.

MINE CAR COUPLING. APPLICATION FILED FEB. 28. 1921.

Patented Maya, 1921.

ISAAC MARTIN, or PITTSBURGH, PENNSYLVANIA.

MINE-GAR COUPLING.

Specification of Letters Patent.

Patented May 31, 1921..

Application filed February 28, 1921. Serial No. 448,704.

To all whom it may concern:

Be it known that I, IsAAo MARTIN, a citizen of the United States,residing at Mount Oliver, Pittsburgh, in the county of Allegheny andState of Pennsylvania, have invented new and useful Improvements inMine-Car Couplings, of which the following isa specification.

This invention relates to coupling devices, and more particularly to acouplingspecially adapted for use in connection with mine cars.

One of the main objects of the invention. is to provide a coupling ofsimple construction and operation which may be applied to mine cars forcoupling the same together. A further object is to provide a coupling soconstructed as to eliminate possibility of accidental uncoupling of thecars. Another object is to provide a coupling so constructed as to bewell adapted to withstand the strains to which it is subjected in use.Further objects will appear from the detailed description.

In the drawings:

Figure 1 is a top plan view of a coupling constructed in accordance withmy invention as applied.

Fig. 2 is a side view of the same.

Fig. 3 is an underneath view of the coupling.-

The coupling includesa body 1 of substantially elliptical outline whichis formed of spaced side plates 2 each provided on its outer face with aloplgitudinally extending reinforcing rib 3. ooks 4 are pivotallysecured by stud bolts 5 and nuts 6 between the plates, these bolts alsoserving to secure the plates together. Each of the hooks is providedwith a hill 7 of substantially threequarter circular shape, the point 8of this bill being disposed in substantial parallelism with body 4 ofthe hook. The bills 7 are adapted for engagement through links 9inserted through loops 10 secured to the draw bars of the cars to becoupled.

Normally the tension on the hooks 4 serves to hold body 1 in substantialhorizontal position and in alinement with loops 10, as illustrated. Inthe event that the cars tend to move together, the body 1 of thecoupling member will be lowered out of alinement with the loops, thehooks 4 turning about stud bolts 5. As will be noted, these hooks arepositioned closely adjacent to each other so that when turned intosubstantially vertical position they contact, the bills of the hooksbeing disposed vertically and remaining in engagement about links 9.This effectually prevents accidental uncoupling of the cars and when thecars again move apart the coupling member is returned to its originalposition in which casual displacement of the links from the bills of thehooks is prevented by the ends of body 1.

Plates 2 are provided in their upper portions with alined hand holes 11to facilitate application and removal of the coupling.

The coupling constructed in this manner may be readily applied orremoved and may be quickly and easily produced at small cost while beingof sufliciently strong construction to effectively withstand the severestrains to which it is subjected in use.

What I claim is In a device of the character described, a body, and twooppositely disposed hook members pivoted in said body adjacent to theends thereof and adapted for engagement through links secured to thedraw bars of adjacent cars, said hooks being so relatively positionedwithin the body as to contact with each other when raised intosubstantially vertical osition.

ISAAC MA TIN.

